Quick Look: Marshall Major FX Seamus Phan Posted in Quick Look, Thoughts A brief look at the Marshall Major FX stereo headphone with microphone, for smartphones and tablets. Share on LinkedInShare on EmailShare on TelegramShare on TwitterShare on FacebookShare on WhatsApp About Seamus PhanSeamus Phan has 33 years of professional experience. Polymath Problem-Solver & Strategist - Leadership, Cybersecurity, Branding, Crisis, Scientist, Artist, Author, Aviation, and Theologian. Some articles are reproduced at McGallen & Bolden, where he is CTO and Head of Content. Connect on LinkedIn. ©1984-2021.